Knockdown paper container



Sept. 12, 1933. Em I I 1,926,365

KNOCKDOWN PAPER CONTAINER Filed Feb. 19:51 2 Sheets-Sheet 1 A TTORNEYS'Sept. 12, 1933. s E TEI 1,926,365

KNOCKDOWN PAPER CONTAINER Filed Feb. 21, 1931 2 Sheets-Sheet 2 1 WININVENTOR.

ATTORNEYS Patented Sept. 12, 1933 1,926,365 KNOCKDOWN PAPER CONTAINERSamuel Bergstein, Cincinnati, Ohio Application February 21, 1931. SerialNo. 517,520

3 Claims.

My invention relates to knock-down paper containers, and particularly tocontainers in which there is great economy in the material required forforming the container, and in which 5 the assembly of the container maybe accomplished by a simple manual manipulation.

It is the object of my invention to provide a container composed of abody with side and end walls, and with a closure for the containerformed by an articulated cover portion having a locking tongue, in whichthe entire container is formed from a single cut and scored blank.

It is another object of my invention to make such a container from asingle cut and scored blank, in which there is a minimum wastage of thecarton material in the pattern for the blank. Another object of myinvention is to provide a container made from a single cut and scoredblank, in which the forming of the container may be accomplished in aminimum sequence of steps in folding. 1

Another object of my invention is to provide a container in which thecontainer is reinforced by overlapped flaps along both ends and oneside, and in which the top cover is reinforced by overlapping flaps atits ends.

The above objects and other objects in simplicity of assembly andeconomy and sturdiness of construction, I accomplish by that certaincombination and arrangement of parts of which I have shown a preferredembodiment.

Referring to the drawings:-

Figure 1 is a plan view of the blank from which the container is made.

Figure 2 is a plan view of a strip of carton material showing theeconomy of cutting the blank without waste.

condition.

Figure 7 is a perspective view showing the first step in the setting upof the carton from collapsed condition.

Figure 8 is a sectional view taken along the lines 8, 8 in Figure 7.

Figure 9 is a perspective view from above, showing a further setting upoperation of the container.

Figure 10 is a sectional view taken along the lines 10, 10 in Figure 9,with parts broken away to indicate the arrangement of the several piecesof the several members forming the container.

Figure 11 is a perspective view of the cornpletely assembled and closedcontainer.

Referring first to the blank forming the container, the blank has sidewalls 1 and 2, with one end wall 3 between and articulated to opposedends of the side wall pieces 1 and 2, and with an end wall 4 articulatedto the other end of one of the side walls, and with a sealing flap 5 forforming the four walls into a tubular enclosure.

Articulated to one side edge of the side wall 2 is the cover flap 6, andthe cover flap has articulated to its opposite edge an interlocking flap7, for extending down into the container after it is set up, and thusholding the cover flap in position. 7

Articulated to the opposite side edge of the other side wall flap 1 isthe bottom wall 8. The bottom wall 8 has flaps 9 and 10 articulated toits ends. The flaps 9 and 10 are substantially the same area as the endwalls 3. and 4, so that when the container is assembled the ends 3 and 4will be reinforced with the bottom wall flaps 9 and 10, which also serveto hold the bottom wall 8 in place. Further, the bottom wall has a sideflap 11 articulated to its outer side edge which interlocks the bottomwall and further provides reinforcement at the lower edge of theopposite side wall 2. The end walls 4 and 3 have flaps l2 and 13,respectively, articulated to their upper edges.

A similar box is shown in my prior Patent No. 1,461,961, dated July 17,1923. My present invention is an improvement in the economy of cuttingand in the knock-down assembly.

Referring to the sheet' 14 of container material from which the blank iscut, it will be noted that the patterns for the individual blanks fittogether all in the same posture so that there 100 is substantially nowastage except at one side and two corner edges of the sheet. I haveshown closing flaps 12 and 13 with slanted ends, which may be manuallymanipulated more readily leaving slight triangular cut out portions 15.

In the drawings, the solid black lines represent cut lines, and the dotand dash lines represent score lines, these being ordinarily provided bya combined cutting and scoring die in a single operation. 110

Referring to Figure 3, which indicates the first and claimed broadly arefolded inwardly against the bottom member 8. The bottom member 8,together with the flaps 9 and 10 folded over against it, is then foldedalong its line of articulation with the side wall member 1, the foldedblank then assuming the appearance indicated in Figure 4.

' The next folding operation is to fold the end wall member 5 overagainst the outer surface of the bottom wall 8. Adhesive is applied tothe outer surface of the sealing tongue 5.

The fourth and last folding operation resulting in the complete assemblyof the carton in knocked down position, is illustrated in Figure 6, inwhich the side wall 2 is folded along the line of articulation with theend wall 3 andso that it extends across this end wall 3 and the bottomwall 8 and its end part overlaps and becomes sealed against the adhesivecoated 'surface of the sealing tongue 5.

The containers are shipped in the condition shown in Figure 6.

The setting up of the container from collapsed form is an exceedinglysimple operation. By merely pressing in against the end edges of thecollapsed container illustrated in Figure 6, the side and end walls willbe formed out into rectangular shape, as indicated, with the bottom wall8 together with its tongue 11 and with the reinforcing flaps 9 and 10 inthe position indicated in Figure '7.

The bottom wall member 8 is then forced down so that it extends acrossthe bottom of the container, and with the same manual manipulation thefingers of the operator are extended out and press the flap 9 againstthe end wall 4, and the flap 10 against the end wall 3.

The container will now be ready for filling, and after filling the cover6 is folded down along the line of articulation between the cover andthe side wall 2. The reinforcing flaps l2 and 13 are then foldedinwardly so that they extend across the box parallel with the bottomwall, and after the tongue 'I has been inserted between an end edge ofthe tongue 12, and of the tongue 13, and the inner surface of the side1, the container will be ready for shipment and use.

It will thus be obvious that the type of container forming the subjectmatter of my invention can be made substantially without waste, and inwhich not only are the operations of forming the collapsed containerexceedingly simple, but the setting up of the collapsed con-- tainer sothat it will be ready for use merely requires two manual manipulations;one, pushing the corners of the collapsed container so that it bends outinto rectangular shape, and the other the pressing down of the bottomwall and the opening out of the reinforcing flaps so that they willreinforce the ends and a side wall.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:-

1. The method of forming a container in knock-down condition, havingside walls, having the bottom wall articulated to one of the side walls,and having two outer end walls attached to said side wall, and inner endwalls extending from said bottom wall whichcomprises folding the innerend walls over against the bottom wall and thereafter folding the bottomwall with its end walls inlaid against said side wall, and thereafterefiecting a joint between the other side wall and an outer end wall toform a container which, when opened out, will have'a rectangular shape.

2. The method of forming a knock-down container of a cut and scoredblank having side and end walls, one end wall extending between andarticulated at each of its sides to the ends of both side walls, and theother end wall being articulated at one of its sides to the end edge ofone of said side walls, said latter noted end wall having a glue flaparticulated to it, one of said side walls having articulated to oppositesides thereof, a cover wall and a bottom wall respectively, said endwalls having reinforcing flaps articulated thereto extending parallel tothe cover wall, said bottom wall having end wall reinforcing flapsarticulated thereto at its end edges, said bottom wall having areinforcing flap articulated to its side edge opposite to the side edgeby which it is articulated to said bottom wall, said blank beingfoldable with four folds, said method consisting in first folding saidend wall reinforcing flaps over against the bottom wall, to which theyare articulated, second, folding said bottom wall with articulated endwall reinforcing flap and said side wall reinforcing flap, over againstthe side wall to which it is articulated, third, folding said end wallwith articulated glue flap, to which adhesive has been applied, overagainst the bottom Wall and, fourth, folding the other end wall andother side wall with the cover wall over against the bottom wall andpressing the free end of 120 said other side Wall to said adhesive, thuscompleting the folding of the container.

3. The herein described method of folding and fastening containers to beshipped collapsed or knocked down, and which can be easily and quicklyassembled or erected for filling the contents, said containers havingside walls, end walls, lid and bottom integrally attached, said bottomhaving one inner side wall, and two additional inner end walls, whichconsists in folding the first inner end walls against the bottom, thenfolding the bottom over on the inner side of one of the side walls, withthe folded inner end walls extending between the bottom wall 135 and oneof the side walls, and thereafter folding and fastening one of outer endwalls to one of the outer side walls.

SAMUEL BERGSTEIN.

